Flashcards in General anesthesia Deck (9)
What are some normal physiological responses to being pregnant?
Decreased serum albumin, increased alpha and beta globulins, increased fibrinogen and factor VII, transferrin and TIBC increases, Fe decreases
Which of the following is NOT affected by volatile anesthetics? SSEPs, MEPs, AEPs, VEPs
Auditory evoked potentials
Describe the mechanism of action of PTH
PTH is activated when calcium is low. It stimulates osteoclast activity to cause bone reabsorption, it activates calcitriol to create vitamin D which stimulates Ca reabsorption in the gut, it increases ca reabsorption in the DISTAL tubule of the kidney
What electrolyte abnormality is seen in respiratory alkalosis?
Hypocalcemia: negatively charged ions are bound to H+. When the body becomes alkalotic, the H+ ions leave the negatively charged proteins and Ca2+ binds instead. This then leads to hypocalcemia
What types of gases will increased MV have the largest effect on?
More soluble gases (in order of most soluble to least: Halothane, isoflurane, sevoflurane, N20, desflurane)
What artery are you at risk for inecting local anesthetic when you are doing an inter scalene block?
The vertebral artery
Define an acid and base in chemistry terms
Acids donate protons and bases receive protons
What is CBF directly related to?
PaCO2, not H+, therefore respiratory acidosis increases CBF more than metabolic acidosis